312403231 has 16 divisors (see below), whose sum is σ = 366686208. Its totient is φ = 260568000.

The previous prime is 312403211. The next prime is 312403241. The reversal of 312403231 is 132304213.

It is not a de Polignac number, because 312403231 - 2⁷ = 312403103 is a prime.

It is a super-2 number, since 2×312403231² = 195191557478478722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312403199 and 312403208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312403211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131706 + ... + 134056.

It is an arithmetic number, because the mean of its divisors is an integer number (22917888).

Almost surely, 2^312403231 is an apocalyptic number.

312403231 is a deficient number, since it is larger than the sum of its proper divisors (54282977).

312403231 is a wasteful number, since it uses less digits than its factorization.

312403231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 312403231 is about 17674.9322770980. The cubic root of 312403231 is about 678.5343511898.

Adding to 312403231 its reverse (132304213), we get a palindrome (444707444).

The spelling of 312403231 in words is "three hundred twelve million, four hundred three thousand, two hundred thirty-one".